If I'm not mistaken, a traction motor blower is a huge squirrel cage fan that partially sticks out of the left side of a locomotive right? Does it blow through tubes to each traction motor on both trucks? Does it wait until the traction motors heat up or is it always running? What voltage do they run at?
On older EMD diesels (and newer ones too im assuming) the TM blowers constantly blow. Im familiar with the GP40s models
However, on some electric locos, ALP44s and ALP46s which I run, especially the ALP44s, they shut off if sitting for a long time and turn on when they start to move, if temperature allows of course
This vid shows the traction motor blowers kicking up a notch, they weren't off, but on a lower speed, but when the train started to move they turn on more powerful. I can't find one of them all the way off and turning on from a stop tho
http://www.youtube.com/watch?v=Vc7ktKi5 ... re=related